2310649 Cylinder Head Gasket Kit Fits CAT Fits Caterpillar 3406B 3406COne New Aftermarket Replacement Cylinder Head Gasket Kit for Caterpillar (Cat) 3406B and 3406C Engines This cylinder head gasket kit is a single head valve grind kit designed for the Caterpillar 3406B and 3406C diesel engines. It contains the gaskets, locks, o rings, and seals required to assemble one cylinder head from the top of the cylinder block upward, including fuel injector seals where applicable. Note: this kit covers one cylinder head only